Pump



"Ay GEDDEs-r. g

PUMP. APPLICATION F|L`ED MAR. 1B. 1922.

' Mmmm Nw.. M, 11922.

2 SHEETS-SHEU l.

JWM

A. GEDDES.

Pun/IP.

APPLICATION FILED MAR. IB. |922.

19mm@ Nov, MI 51922.

2 SHEETS-SHEET 2 II ,/III, mi l Patented Non. "lei, i922.

ALFRED GEDDES, F BRADFORD, PENNSYLVANIA.

PUMP.

Application filed March 18, 1922., Serial No. 544,880.

Pennsylvania, have invented a Pump, of

which the following is a full and complete specification.

My invention is an improvement in that particular class of pumps whichare esvlo pecially designed for use in pumping oil from oil-wells, andin which a workingbarrel is attached to the lower end of the well-tubingto form an extension thereof and receives the piston operated by a rodextendinup through the tubing.

he primary object of my invention is to vprovide a pump of thischaracter in which the pumping capacity is greatly increased withoutincreasing the relative size of the pumping-barrels and pist-ons,permitting the use of standard pistons and valves.

A further object of my invention is to provide a pumping mechanism foroil-wells which may be readily and conveniently removed from theworking-barrels at the lower end of the tubing for examination and.repair of the valves and other parts thereof, and when seated in saidworking-barrels will be firmly held in place and therefore not affect a@the pumping operation.

These principal objects are attained in the present instance byproviding a pump comprising two pistons working one above the other witha casing to contain the upper barrel and having a by-pass around thesame,

in connection with an arrangement of valves by which the cil will bedrawn into the lower ends of both piston-chambers or barrels anddischarged fromtheir upper ends into the well tubing on the upstroke ofthe ywith holes 21 through which the oil passes "into, the pump-barrel.

pistons, each downstrolre of the latter forcing the oil from the lowerends of said barrels through the pistons into the upper ends thereof;whereby double the quantity of oil is discharged than by the use of asingle piston.

` particularly claim as'my invention, and desire to protect byLetters-'Patent yis more specifically set forth in the appended claims.In the accompanying drawings:

-Fig l is a vertical sectional view through the pump-barrels and casing,showing the pumpingmechanism in side elevation.

F ig. 2 isa side elevation ofthe casing with the upper part thereofbroken away to show the barrel. 4

Fig. 3 is a vertical sectional view through the casing, pump-barrels,and pumping mechanism. v

Fig. et is a transverse sectional view on the "line 4 4 of Fig. 3.

Figs. 5 and 6 arev detail views of one of the valved couplings'. f v

Figs. 7 8 and 9are details of the valved coupling at the upper end ofthe casing.

In carrying outmy invention .therel is attached at the lower end of thewell-tubing 10 an open-ended casing 1l which includes vthe lupperpump-barrel 12 of the pumping mechanism and to ywhich the lower barrel13 is attached on aline with the upper barrel,

said casing in the'present` instance being v formed 'withthepump-barrel12 at the center thereof to provide a surrounding space orchamberlL-through which the .oil from the lower barrel passes into theywell-tubing 10 by way of openings 15 and 16 at4 opposite ends of saidupper barrel., The openings through the reduced upper and lower endsofthe casing correspond with the internal diameter of both pump-barrels,and as the upper barrel 12 terminates near the ends of the casing toprovide 'theafore-mentioned openings 15 and l16 it is supported from thebody of the casing by tubular connections 17 l`providing passages 18leading from the well to said pump-barrel, The oil yenters thelowerbarrel 13 through a coupling l19 threaded on the lower end thereofand having a transverse `wall 20 forming a seat for the pumpingmechanism and provided vcentrally rihe .pumping mechanism ts within theupper and .lower'barrels 12and' 13 and includes brass linings 22 and 23for said barrels, respectively, said 'linings being connected by avalved coupling 2a which separates the piston-chambers for independentactiontofm'the'pistons 25 26 in liftingthe oil and 'is located on a linewith the inlet openings 18 through the casing and has ports 27 throughthe same to the upper pump-barrel or piston-chamber' so that oil willlbe drawn intothe latterpn thelupstrokefof piston 25,

va check-valve 28 operating to close said ports i j on the downstroke ofsaid piston. The coupling 24 is located in this; position with thestanding-valve 29 at' the lower end of the pumping mechanism resting onthek transverse wall 2O of coupling 19 at.lower end of barrel 13, saidstanding-valve having a cupshaped packing 30 cooperating with a pacl'r.

ing 3l at the upper end of the pumping mechanism to hold said mechanismor afore-` mentioned linings thereof in place.

- `The standing-valve'is of the usualA type, havinga cage 32 withremovable valveseat 33 for theV ball 34, thecupshaped packing30beingfhe`ld KVin placeat the" lower end thereof by a clamping-nut 3 5,This standing-valve is threaded intothe vlower end of thel lining '23"and projects beyond the' same so that the peeking intimately engage thepump-barrel" which iss'lightly tapered internally at this point, andsaid.' packing being cupsha'pe'd willl more eifeetively cooperate withthe ring-packing lat the upperend ofthe barrellin'ings to hold saidlinings firmly in place against movement on the upst'role ofthe pistonsinthe operl f'ation of the pump.

The pistons 24. and 25. are ofVA a standard l type, and therefore adescription ofv one will apply alsoto the other, like numerals ofreference .being employed', for each has threaded on its upper end acage 36 preferably with a removable seat 37 for the ball 38., said,pistone being eonneetefl'by a rod .39 threadedinto the upper end of thecage f on the lower piston and into a flanged-nut 40 onthe lower end yofthe upper piston, the nut having holesfl leading into the bore through.said piston. 'The *connecting-rod 3 9 passes through a central openingin the ying-,valve 2 9 vand; into` the upper pistonchamber lorinner-linedY pumpbarrel l2 'fromthe sides ofthe casingll through vthevalved coup-ling. device 214,aI-1d."t the'present instance ythe oilllifted vby both pistons passesout through a coupling device located inthe lopening through the reduced upper endl .of casing 11.'. This lastmentioned .couplingfis ign the form of av cylindrical., casing; 42* withia 'perforated eap. 1,43., threaded the upper end thereof; saideasinghavingy a reduced threaded portion 4.2"* at its lower entl fenattaehment te the upper end ner Wall 42b`to provide a seat for a cheekjvalve 44; while the cap 43 has a central tubular stem 43a through whichthe pumping-rod 45 passes for connection to the lipper piston and on thelower portion of which the check-valve 44 works.

- Inasmuch as the' ports 27 in the valvedcoupling 24 extending `from thesides thereof through the valve-seat 24b at its upper end may notregister horizontally with the inlet-openings 18 through casing 1l whenthe pumping mechanism is inserted in thev pump-barrels provide saidcoupling lde vice. with a circumferential recess 27a" at the lower endsof said ports,`and 7-to insure a properfseatingof check-valve 28,. thereis anhannu'larundercut recess 271 belo vv its seat around' stem 24a; andto screen theoil `entering passages or inlet-openings 1'8 provide aband' 47 around casing `ll perforated on a line with said inlet openings,"or wire mesh maybe employed. i

The operation of the pump will bereadily understoodf'roin the foregoingldescrip` tion.; for, as hereinbefore stated', the oil en-V Dters bothpiston-chambers at the lower ends thereof on the upstroleof the pistonsAand is also forced up into 'the ywell-tubing "10 through valve42 on theupstrokeof said pistonsmthe oil'from the upper, 'barrelor piston-chamberbeing forced directly upward while the oill from. the llower barrel orpistonfchamber ygoes .around theupper barrel by way of theby-pass 141.On 'the downstroke the oil is'forced-through the pistons yfrom thelowerends ofthe cylinders tothe upper ends thereof. In this. manner each`working stroke or lift .of the pump.y discharges double quantity ofoil.

lt will be also understood that when it -is necessary to examine orrenew any of ythe working parts .o f the pumping'.nfie'chanism` theconnected linings with thestandingvalve atthe lower end thereof areremoved by means of the suckerrodsj as usualileaving .the casing, andlower pump-barrel. atthe. lower end' of the. we'llf tu'bing` undisturbed.`

"Furthermore, the entire pumping, arrangef ment shown. may be easilyinstalled. in a wegll by. simply lowering the `s'amefinr the hole to1`l5 the desired, depth.

Having descrihed4 invention, 1 claim:

l. pump comprising a casing having a pump-barrel and av by-pass forpassage of liquid around saidlbarrel from' bottom to topy thereof7 apump -barrel -r conneeted. .rto the lower end of the casing invertical.aline-` ment with the aforementioned pump-barrel andycommunicating with the ybypass atthe lower end' thereof, a, valveinterposed between. the pump-barrelsand having anopgen- `ingtherethrough7 a valve at the upper end of the upper barrel Vwithanopening theref through, andla stan di ng.valve` at the lower endof thelowerpump-barrel; together with pistons Working in lthe pump-barrels andresaca? connected by a rod passing through the iuterposed valve, and apumping-rod connected to the upper piston and passing through the uppervalve.

2. A pump comprising a casing having a pump-barrel and a by-pass at theside of the same to provide a passage for liquid around said barrel frombottom to top, and a pumpbarrel connected to the lower end of the casingin alinement with the aforementioned barrel and communicating with theby-pass at the lower end thereof, the casing having inlet-openings fromits sides into the pumpbarrel enclosed -in said casing; together withlinings for the barrels, a valved coupling connecting said linings, astanding-valve at the lower end of the connected linings and a valve atthe upper end of said connected linings.

3. A pump comprising a casing having a pump-barrel with a by-pass at theside of the same to provide a passage around said barrel from bottom totop, and a pump-barrel connected to the lower end of the casing inalinement with the aforementioned barrel and communicating with theby-pass at the lower end thereof, said casing having inlet-openings fromits sides into the barrel enclosed in said casing; together with liningsfor the barrels, a valved-coupling connecting said linings with anopening therethrough, a standing-valve at the lower end of the connectedlinings, a valved coupling at the upper end of the connected liningswith an opening therethrough, and pistons in the inner-lined barrelsconnected by a rod passing through the interposed valvedcoupling andoperated by a rod passing through the opening in the upper valve,substantially as shown and described.

il. A pump comprising a casing having a pump-barrel with a by-pass atthe side of the same to provide a passage around said barrel from bottomto top, and a pumpbarrel connected to the. lower end of the casing inalinement with the aforementioned barrel and communicating with theby-pass at the lower end thereof; together with linings for the barrelsconnected together by an interposed valved coupling, a standingvalve atthe lower end of the connected linings with a cup-shaped packing toengage the lower pump-barrel, and a valved coupling at the upper end ofthe connected linings having a ring-packing engaging the sides of theopening in the upper end of the casing, to hold the linings in thepump-barrels; and pistons working in the inner-lined barrels.

5. A pump comprising a casing having a pump-barrel with a by-pass at theside of the same to providea passage around said barrel from bottom totop and inlet openings extending from the sides of the casing into saidbarrel, and a pump-barrel connected to the lower end of the casing inalinement with the aforementioned barrel and communicating with theby-pass at the lower end thereof; together with linings for the barrelsconnected together by a valved coupling located on a line with the inletopenings through the casing to connectl said inlet openings with theupper barrel, said valved-coupling having a central openingtherethrough, a standing-valve at the lower end of the connected liningshaving a cup-shaped packing engaging the lower pump-barrel, and acoupling at the upper end of the connected linings having a check valveand a packing the latter engaging the wall of the openingthrough theupper end of the casing above the upper barrel, said last mentionedcoupling having a tubular stem on which the check-valve works; andvalved pistons working in the pump-barrels and connected by a rodpassing through the interposed valved coupling with the pumping rodconnected to the upper piston passing through the tubular stem of theupper valve, substantially as shown and for the purpose set forth.

ALFRED GEDDES

